Climate averages 1991–2020
Gulu weather
in September.
A warm, wet month: the 8th warmest and the 8th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
September is a warm month in Gulu: daytime highs average 27.5°C and nights cool to about 18.3°C. By daytime temperature it is the 8th warmest of the 12 months.
Expect about 163 mm of rain on roughly 20 days, which makes September a wet month (the 8th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 12 h 08 min on an average September day.
The nearest other city in this atlas is Lira (89 km away). In September its highs average 27.9°C, about as warm as Gulu, with 117 mm of rain.
Among the 21 cities listed in Uganda, Gulu ranks 3rd of 21 for the warmest September highs and 19th of 21 for the driest September (rainfall, lowest first). The mean September high of those 21 cities is 25.7°C; Gulu is 1.8°C warmer than that mean.
From September to October, average highs rise by 0.2°C to 27.7°C, and monthly rainfall rises from 163 mm to 195 mm.
The annual picture
September in context
Monthly rainfall
Average total · mmAverages from hourly ERA5 reanalysis data. Actual weather varies from year to year. How these numbers are calculated
Every month, side by side
Gulu climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 31.7°C20.5°C | 20.5°C | 18 | 3.0 | 12.012 h |
| February | 32.8°C21.4°C | 21.4°C | 18 | 4.2 | 12.012 h |
| March | 31.6°C21.0°C | 21.0°C | 98 | 12.6 | 12.112 h |
| April | 28.6°C19.8°C | 19.8°C | 198 | 22.0 | 12.212 h |
| May | 27.3°C19.1°C | 19.1°C | 184 | 24.0 | 12.212 h |
| June | 26.7°C18.4°C | 18.4°C | 134 | 19.3 | 12.312 h |
| July | 26.4°C17.9°C | 17.9°C | 160 | 22.5 | 12.312 h |
| August | 26.6°C17.8°C | 17.8°C | 200 | 24.6 | 12.212 h |
| September, selected | 27.5°C18.3°C | 18.3°C | 163 | 20.1 | 12.112 h |
| October | 27.7°C18.7°C | 18.7°C | 195 | 21.0 | 12.112 h |
| November | 28.2°C18.8°C | 18.8°C | 121 | 13.9 | 12.012 h |
| December | 29.9°C19.3°C | 19.3°C | 30 | 5.2 | 12.012 h |
Rainfall is the average of the 30 separate monthly totals. A rain day is a local calendar day with at least 1 mm of precipitation. Daylight is the calculated sunrise-to-sunset length, not measured sunshine.
Compare places
September in nearby cities
- Lira in SeptemberUganda · 89 kmHigh 27.9°C · Low 18.1°C · 117 mm rain
- Masindi in SeptemberUganda · 138 kmHigh 26.7°C · Low 18.1°C · 145 mm rain
- Arua in SeptemberUganda · 157 kmHigh 26.6°C · Low 17.2°C · 105 mm rain
- Hoima in SeptemberUganda · 183 kmHigh 26.5°C · Low 18.1°C · 280 mm rain
- Kotido in SeptemberUganda · 205 kmHigh 28.8°C · Low 17.7°C · 44 mm rain
- Yei in SeptemberSouth Sudan · 232 kmHigh 27.9°C · Low 19.0°C · 178 mm rain
- Juba in SeptemberSouth Sudan · 244 kmHigh 30.2°C · Low 21.7°C · 113 mm rain
- Mityana in SeptemberUganda · 264 kmHigh 25.5°C · Low 17.0°C · 144 mm rain
Read the numbers correctly
Climate, not a promise.
These patterns help compare months. They cannot tell you the weather on a specific day of your trip.
Sources, method and limitsHow these numbers are made (what the highs, lows and rain days mean, the sources and the model cell used for Gulu) is explained once on the Gulu year overview and on the Sources, method and limits page.